GOODS & SERVICES: New Ideas, Apr. 9, 1951

Scratch-Happy. Because he reckoned that "cows know where they itch," Cattleman Bill Kirk designed
a pest-killer which any range animal can apply to itself. "Old Scratch"
is a flexible steel cable, strung with hundreds of steel washers,
lubricated by a reservoir of oil-insecticide. The cow just rubs against
Old Scratch, is automatically smeared with bug-killer, made happier,
puts on weight faster as a result. Kirk, who started out with 11¢ in
capital last year, has already shipped 4,500 models of Old Scratch to
ranchers. Price: $198.50 f.o.b. Amarillo, Texas.